Don't stuff, Satisfy: You do not have to eat until every last bite is cleaned off of your plate. Your stomach is made up of smooth muscle and when you overeat, it will stretch out and your appetite will increase. You only want to eat until you're satisfied, not until you are full. If you already have a large appetite, then it's going to take a little bit more control at the beginning, but it is imperative that you decrease your portion sizes.